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Analog Electronics

Analog Electronics
The room temperature resistivity of pure silicon is

 50
 6
 3000
 300

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Analog Electronics
If=0.98, Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be

2.3mA
5.2mA
4.6mA
3.2mA

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Analog Electronics
If a transistor operates at the middle of the load line, a decrease in the current gain will move the Q point

 off the load line.
  down.
 up.
 nowhere.

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Analog Electronics
The voltage divider biasing circuit is used in amplifiers quite often because it

  limits the AC signal going to base.
  makes the operating point almost independent of β.
  reduces the cost of the circuit.
  reduces the DC base electric current.

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Analog Electronics
An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

395mV
79.5 mV
795mV
39.5mV

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Analog Electronics
Which types of device is the diode ?

 Insulator
None of these
 Conductor
 Semiconductor

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